The Sun, the Earth and the Weather is the theme of this year’s World Meteorological Day. It highlights the role of the Sun in delivering the energy that powers all life on Earth, and drives the weather, ocean currents and the hydrological cycle.

Recent developments in the climate change arena, including the Paris Agreement in 2015 and the publication of the IPCC Special Report on Global Warming of 1.5 °C, have noted the potential need for negative emission technologies to remove carbon dioxide from the atmosphere in order to limit temperature increase.

Increasing levels of airborne pollutants deposited either through gravity (i.e. free-falling) or washed out by rain can result in detrimental effects to crops, human health and vulnerable ecosystems by altering critical and delicate chemical balances. Identifying areas most at risk and which would most benefit from measures to control excessive pollutant load is crucial.

The full Scientific Assessment of Ozone Depletion is now available. It shows that actions taken under the Montreal Protocol have led to decreases in the atmospheric abundance of controlled ozone-depleting substances (ODSs) and the start of the recovery of stratospheric ozone.

World Meteorological Day takes place every year on 23 March and commemorates the coming into force on 23 March 1950 of the Convention establishing the World Meteorological Organization. It showcases...

The ever-growing global population faces a wide range of hazards such as tropical cyclone storm surges, heavy rains, heatwaves, droughts and many more. Long-term climate change is increasing the intensity...

An international effort delivering an unsurpassed look at changes occurring in the ocean worldwide has achieved a major milestone as it marks its 20th anniversary. The Argo programme, which incorporates about 4,000 floats worldwide, delivered its two millionth profile of physical data from the from the upper 2 kilometers of the worlds oceans.